This is a sharp bit of work by Derby, marking 60 years since John Osborne’s splenetic debut blew the lid – so theatre legend insists – off a complacent postwar anyone-for-tennis world. LOOK BACK IN ANGER was condemned as “squalid” by some, but hailed by Tynan for pinpointing a depressed, anarchic, resentful class hostility of working-class youth sick of wartime deference but not yet liberated by the ‘60s. It’s especially sharp since Derby – where Osborne was working as a stroppy stage manager in a failing marriage – actually turned down the play first time round.